Seven environmental health and justice organizations, including the Sierra Club, are suing the U.S. Environmental Protection Agency over what they say are outdated toxicity standards for lead.

The suit comes as authorities explore just how contaminated the heavy metal has made the soil in East Chicago.

Thinkprogress.org health writer Alex Zelinski says the lawsuit claims the EPA – and not the Centers for Disease Control and Prevention -- should have kept more accurate records on the alarming rise of health effects of lead on humans.

Voluntary conservation farming practices are measurably decreasing nutrient pollution in the Mississippi River Basin, and this good news: from the Midwest, all the way down the Mississippi River in the Gulf of Mexico. As Indiana Public Broadcasting’s Nick Janzen reports, the Indiana trend in conservation is reducing the pollution that creates harmful algae blooms and the gulf’s dead zone.

The Indianapolis Zoo, as part of the dolphin exhibit, has a video of dolphins swimming in the Gulf of Mexico. They’re swimming near a boat, pushing air through their blowholes.

According to the Indiana Department of Natural Resources, the number of urban coyotes has increased 15-fold since the turn of the century.

People used to country living have long been accustomed to the “ar-ar-arooo” howl of the coyote, but city dwellers in Indiana are getting used to it, too. The DNR says thanks to urban expansion, coyote encounters with people are more common than ever before.

Indiana DNR wildlife biologist Megan Dillon says coyotes, for the most part, aren’t anything to worry about, even though may boast a not-so-nice-reputation